FR2659115A1 - Seal for an internal combustion engine injector - Google Patents
Seal for an internal combustion engine injector Download PDFInfo
- Publication number
- FR2659115A1 FR2659115A1 FR9002671A FR9002671A FR2659115A1 FR 2659115 A1 FR2659115 A1 FR 2659115A1 FR 9002671 A FR9002671 A FR 9002671A FR 9002671 A FR9002671 A FR 9002671A FR 2659115 A1 FR2659115 A1 FR 2659115A1
- Authority
- FR
- France
- Prior art keywords
- injector
- seal
- wall
- support
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
- F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
- F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
La présente invention est relative à un joint d'étanchéité pour injecteurThe present invention relates to a seal for an injector
de moteur à combustion interne du type destiné à réaliser une étanchéité entre la paroi extérieure de l'injecteur ou d'un support d'injecteur visà-vis de la paroi du logement prévu pour l'injecteur dans la culasse du moteur. Une telle étanchéité est réalisée de manière traditionnelle en mettant en place dans une gorge périphérique de l'injecteur un joint statique, notamment un joint torique, venant au contact de la paroi du internal combustion engine of the type intended to provide a seal between the outer wall of the injector or an injector support vis-à-vis the wall of the housing provided for the injector in the cylinder head of the engine. Such a seal is produced in the traditional manner by placing in a peripheral groove of the injector a static seal, in particular an O-ring, coming into contact with the wall of the injector.
logement cylindrique de la culasse dans lequel doit être logé l'injecteur. cylindrical cylinder head housing in which the injector must be housed.
Par suite de la mise en place "en aveugle" de l'injecteur dans son logement dans la culasse, il peut se produire un déplacement axial du joint torique par rapport à sa gorge de retenue dans l'injecteur ou le support de celui-ci par suite du frottement sur la paroi du logement de la culasse, de telle sorte que l'on n'est jamais assuré que le joint d'étanchéité est correctement en place dans la position d'utilisation de l'injecteur, un défaut de positionnement du joint d'étanchéité entraînant As a result of the "blind" positioning of the injector in its housing in the cylinder head, there may be an axial displacement of the O-ring with respect to its retaining groove in the injector or the support thereof. due to friction on the wall of the cylinder head housing, such that it is never ensured that the gasket is correctly in place in the position of use of the injector, a positioning fault of the seal causing
des défauts d'étanchéité autour de l'injecteur. leaks around the injector.
La présente invention se propose de réaliser un joint d'étanchéité pour injecteur de moteur à combustion interne, de conception The present invention proposes to produce a seal for an injector of an internal combustion engine, of design
particulièrement simple et économique, évitant notamment cet inconvénient. particularly simple and economical, in particular avoiding this drawback.
Le joint d'étanchéité selon l'invention peut en outre selon le cas être mis en place directement sur un injecteur ou, lorsque la conception du moteur le The seal according to the invention can also, depending on the case, be fitted directly onto an injector or, when the design of the engine requires it.
prévoit, sur un support d'injecteur logé dans la culasse. provides, on an injector support housed in the cylinder head.
Le joint d'étanchéité selon l'invention est du type bague à lèvre et comporte une armature cylindrique de section sensiblement en forme de L dont la petite branche définit une portée annulaire d'appui contre une portée d'extrémité de l'injecteur ou du support d'injecteur, et sur la grande branche de laquelle est adhérisée une garniture d'étanchéité en élastomère comportant une portée annulaire intérieure d'étanchéité apte à assurer un contact d'étanchéité avec la surface périphérique de l'injecteur ou du support d'injecteur, et au moins une lèvre d'étanchéité en saillie vers l'extérieur, de préférence au voisinage de l'extrémité libre de la grande branche de l'armature, apte à assurer un contact d'étanchéité avec la The seal according to the invention is of the lip ring type and comprises a cylindrical frame of section substantially L-shaped, the small branch of which defines an annular bearing surface against an end surface of the injector or of the injector support, and on the large branch of which is adhered an elastomeric seal comprising an internal annular sealing surface capable of ensuring sealing contact with the peripheral surface of the injector or of the support of injector, and at least one sealing lip projecting outwardly, preferably in the vicinity of the free end of the large arm of the frame, capable of ensuring sealing contact with the
paroi cylindrique du logement de l'injecteur dans la culasse. cylindrical wall of the injector housing in the cylinder head.
De préférence, la portée intérieure de la garniture d'étanchéité et la paroi extérieure de l'injecteur ou du support d'injecteur comportent des moyens de blocage coopérants pour immobiliser axialement le Preferably, the inner surface of the seal and the outer wall of the injector or of the injector support comprise cooperating locking means for axially immobilizing the
joint d'étanchéité sur l'injecteur ou le support d'injecteur. gasket on the injector or the injector holder.
Avantageusement, la portée intérieure de la garniture d'étanchéité comporte ainsi au moins un bourrelet annulaire en saillie vers 1 l'intérieur et apte à être logé dans une gorge périphérique ménagée dans la Advantageously, the internal bearing surface of the seal thus comprises at least one annular bead projecting inwardly and capable of being housed in a peripheral groove formed in the
paroi extérieure de l'injecteur ou du support d'injecteur. outer wall of the injector or injector holder.
Dans un mode de réalisation particulier, il est prévu deux bourrelets annulaires espacés axialement et aptes à être logés dans des gorges annulaires périphériques espacées axialement sur la paroi extérieure In a particular embodiment, there are provided two annular beads spaced axially and able to be housed in peripheral annular grooves spaced axially on the outer wall.
de l'injecteur ou du support d'injecteur. injector or injector holder.
Dans le but de mieux faire comprendre l'invention, on va maintenant en décrire à titre d'exemple nullement limitatif un mode de réalisation en se référant au dessin annexé dans lequel: la figure unique d'une vue en coupe schématique d'un joint In order to better understand the invention, an embodiment will now be described by way of non-limiting example with reference to the appended drawing in which: the single figure of a schematic sectional view of a gasket
d'étanchéité selon l'invention monté sur un support d'injecteur. seal according to the invention mounted on an injector support.
On a schématiquement illustré sur la figure 1 une partie d'une culasse I d'un moteur à combustion interne définissant un logement cylindrique 2 dans lequel est mise en place un support 3 destiné à recevoir Is schematically illustrated in Figure 1 a part of a cylinder head I of an internal combustion engine defining a cylindrical housing 2 in which is placed a support 3 intended to receive
un injecteur (non représenté).an injector (not shown).
Le joint d'étanchéité selon l'invention comporte une armature métallique 4 présentant sensiblement une section en forme de L avec une The seal according to the invention comprises a metal frame 4 having substantially an L-shaped section with a
grande branche 5 prolongée par une petite branche 6. large branch 5 extended by a small branch 6.
Sur l'armature 4 est adhérisée une garniture d'étanchéité en élastomère désignée globalement par 7 et comportant une portée annulaire intérieure 8 et une lèvre d'étanchéité 9 en saillie vers l'extérieur au-delà On the frame 4 is adhered an elastomeric gasket generally designated by 7 and comprising an internal annular bearing 8 and a sealing lip 9 projecting outwardly beyond.
de l'extrémité libre de la grande branche 5 de l'armature 4. from the free end of the large branch 5 of the frame 4.
La portée intérieure 8 de la garniture d'étanchéité comporte deux bourrelets 10, Il annulaires, espacés axialement et s'engageant comme on le voit sur le dessin dans des gorges périphériques 12, et respectivement The inner bearing surface 8 of the seal comprises two annular beads 10, II, axially spaced apart and engaging as seen in the drawing in peripheral grooves 12, and respectively
13, ménagées dans la paroi extérieure du support d'injecteur 3. 13, provided in the outer wall of the injector support 3.
Comme on s'en rend compte à l'examen du dessin, le joint d'étanchéité est parfaitement positionné axialement par rapport au support d'injecteur 3 par appui de la petite branche 6 de l'armature contre la face d'extrémité 14 du support d'injecteur, tout déplacement axial relatif du joint d'étanchéité et du support d'injecteur étant empêché par engagement des bourrelets 10 et 11 de la garniture d'étanchéité dans les gorges 12, 13 As can be seen on examination of the drawing, the seal is perfectly positioned axially relative to the injector support 3 by pressing the small branch 6 of the frame against the end face 14 of the injector support, any relative axial displacement of the seal and the injector support being prevented by engagement of the beads 10 and 11 of the seal in the grooves 12, 13
correspondantes du support d'injecteur. of the injector support.
Le joint selon l'invention est très facilement mis en place sur un support d'injecteur (ou sur un injecteur) par emmanchement à l'extrémité de celui-ci, puis le support d'injecteur (ou l'injecteur) est mis en place dans son logement 2 de la culasse, le joint d'étanchéité étant parfaitement maintenu sur le support d'injecteur (ou sur l'injecteur) tant The seal according to the invention is very easily placed on an injector support (or on an injector) by fitting at the end of the latter, then the injector support (or the injector) is put in place. place in its housing 2 of the cylinder head, the seal being perfectly maintained on the injector support (or on the injector) as long as
au cours de la phase de mise en place qu'en cours d'utilisation. during the installation phase than in use.
2 -2 -
3 26591153 2659115
Bien que l'invention ait été décrite en liaison avec un mode de réalisation particulier, il est bien évident qu'elle n'y est nullement limitée et qu'on peut lui apporter différentes variantes et modifications Although the invention has been described in connection with a particular embodiment, it is obvious that it is in no way limited thereto and that various variants and modifications can be made to it.
sans pour autant sortir ni de son cadre ni de son esprit. without going beyond its framework or its spirit.
4 -4 -
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9002671A FR2659115B1 (en) | 1990-03-02 | 1990-03-02 | SEAL FOR INJECTOR OF INTERNAL COMBUSTION ENGINE. |
US07/659,953 US5129658A (en) | 1990-03-02 | 1991-02-25 | Seal for an internal combustion engine injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9002671A FR2659115B1 (en) | 1990-03-02 | 1990-03-02 | SEAL FOR INJECTOR OF INTERNAL COMBUSTION ENGINE. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2659115A1 true FR2659115A1 (en) | 1991-09-06 |
FR2659115B1 FR2659115B1 (en) | 1992-05-15 |
Family
ID=9394331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9002671A Expired - Fee Related FR2659115B1 (en) | 1990-03-02 | 1990-03-02 | SEAL FOR INJECTOR OF INTERNAL COMBUSTION ENGINE. |
Country Status (2)
Country | Link |
---|---|
US (1) | US5129658A (en) |
FR (1) | FR2659115B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0825342A1 (en) * | 1996-08-22 | 1998-02-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder head device for internal combustion engine |
WO2008134250A1 (en) * | 2007-04-24 | 2008-11-06 | Lycoming Engines, A Division Of Avco Corporation | Fuel injector mounting assembly for an aircraft engine fuel delivery system |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5487368A (en) * | 1994-07-29 | 1996-01-30 | Caterpillar Inc. | Combustion gas seal assembly adapted for a fuel injector |
JPH11247743A (en) * | 1998-03-02 | 1999-09-14 | Mitsubishi Electric Corp | Fuel injection valve for cylinder injection |
DE19834475A1 (en) * | 1998-07-31 | 2000-02-03 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE19941930A1 (en) * | 1999-09-03 | 2001-03-15 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE10019567A1 (en) * | 2000-04-20 | 2001-10-31 | Busak & Shamban Gmbh & Co | poetry |
DE10050056A1 (en) * | 2000-10-10 | 2002-04-18 | Bosch Gmbh Robert | Fuel injector |
DE10108194A1 (en) * | 2001-02-21 | 2002-08-29 | Bosch Gmbh Robert | Sealing device for a fuel injector |
DE10140797A1 (en) * | 2001-08-20 | 2003-07-31 | Bosch Gmbh Robert | Compensation element for a fuel injector |
US6866026B2 (en) * | 2002-08-28 | 2005-03-15 | Federal-Mogul World Wide, Inc. | Gasket for fuel injector |
US20040201181A1 (en) * | 2003-04-09 | 2004-10-14 | Williamson Alexander S. | Flange seal |
DE10337892A1 (en) * | 2003-08-18 | 2005-03-17 | Daimlerchrysler Ag | Fuel injector |
DE102004015133A1 (en) * | 2003-11-03 | 2005-06-02 | Robert Bosch Gmbh | injector |
DE10354465B4 (en) * | 2003-11-21 | 2014-07-17 | Robert Bosch Gmbh | Fuel injector |
DE10358913A1 (en) * | 2003-12-16 | 2005-09-01 | Robert Bosch Gmbh | Fuel injector |
DE102004049277A1 (en) * | 2004-10-09 | 2006-04-13 | Robert Bosch Gmbh | Damping element for a fuel injection valve |
FR2878582B1 (en) * | 2004-11-30 | 2007-04-27 | Renault Sas | ENGINE COMPRISING A JOINT INTERPOSED BETWEEN THE CYLINDER HEAD AND EACH INJECTION NOZZLE |
US20070113828A1 (en) * | 2005-11-22 | 2007-05-24 | Fonville Carl E | Fuel injector isolating and sealing member |
DE102006009094A1 (en) * | 2006-02-28 | 2007-08-30 | Bayerische Motoren Werke Ag | Damper for use between cylinder head and injector in region of injector foot, has sub-functional section e.g. inner ring and outer ring, for fixing injector with respect to cylinder head, where damper is formed as multipart structure |
DE102007019006B4 (en) | 2007-04-21 | 2009-06-18 | Ab Skf | sealing element |
US20080296845A1 (en) * | 2007-05-31 | 2008-12-04 | Baker Hughes Incorporated | Downhole seal apparatus and method |
US7827964B2 (en) * | 2009-01-14 | 2010-11-09 | Ford Global Technologies | Fuel injection system for internal combustion engine with injector isolator |
GB0908690D0 (en) * | 2009-05-20 | 2009-07-01 | Delphi Tech Inc | Mounting system for an exhaust system |
US9777859B2 (en) * | 2012-11-19 | 2017-10-03 | Continental Automotive Systems, Inc. | Purging and sealing-reductant delivery unit for selective catalytic reduction systems |
CN105508104B (en) * | 2014-09-26 | 2018-07-24 | 光阳工业股份有限公司 | The fuel injection equipment (FIE) of injection engine |
JP6793397B2 (en) * | 2017-02-24 | 2020-12-02 | 武蔵エンジニアリング株式会社 | Seal structure and device provided with the seal structure |
US10746145B1 (en) * | 2019-05-08 | 2020-08-18 | Delphi Technologies Ip Limited | Isolator for fuel injector |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2824476A1 (en) * | 1978-06-03 | 1979-12-06 | Bayerische Motoren Werke Ag | FUEL INJECTION NOZZLE ATTACHMENT TO AN COMBUSTION MACHINE |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1053609A (en) * | 1951-04-24 | 1954-02-03 | Saurer Ag Adolph | Injection nozzle for diesel engines |
US2729482A (en) * | 1952-12-11 | 1956-01-03 | Victor Mfg & Gasket Co | Fluid seal |
DE2208646C2 (en) * | 1972-02-24 | 1986-11-06 | Robert Bosch Gmbh, 7000 Stuttgart | Injection valve fastener to diesel engine suction manifold - has two or more injectors connected with common rigid fuel supply tube supported via resilient plastics member |
DE7827497U1 (en) * | 1978-09-15 | 1980-03-06 | Robert Bosch Gmbh, 7000 Stuttgart | HEAT PROTECTION FOR NOZZLES OF INTERNAL COMBUSTION ENGINES |
US4669737A (en) * | 1986-08-26 | 1987-06-02 | Neapco, Inc. | Annular shaft seal with cam portion on sealing lip |
-
1990
- 1990-03-02 FR FR9002671A patent/FR2659115B1/en not_active Expired - Fee Related
-
1991
- 1991-02-25 US US07/659,953 patent/US5129658A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2824476A1 (en) * | 1978-06-03 | 1979-12-06 | Bayerische Motoren Werke Ag | FUEL INJECTION NOZZLE ATTACHMENT TO AN COMBUSTION MACHINE |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0825342A1 (en) * | 1996-08-22 | 1998-02-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder head device for internal combustion engine |
US5785024A (en) * | 1996-08-22 | 1998-07-28 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder head device for internal combustion engine |
WO2008134250A1 (en) * | 2007-04-24 | 2008-11-06 | Lycoming Engines, A Division Of Avco Corporation | Fuel injector mounting assembly for an aircraft engine fuel delivery system |
US7802560B2 (en) | 2007-04-24 | 2010-09-28 | Lycoming Engines, A Division Of Avco Corporation | Fuel injector mounting assembly for an aircraft engine fuel delivery system |
Also Published As
Publication number | Publication date |
---|---|
US5129658A (en) | 1992-07-14 |
FR2659115B1 (en) | 1992-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
TP | Transmission of property | ||
RM | Correction of a material error | ||
ST | Notification of lapse |
Effective date: 20071130 |